by heart

at heart, by heart

• that socialite is a rascal at heart.
  那个知名人士实质上是个坏蛋。
• a councillor should have the collective interest of society at heart.
  议员应当关心大众的利益。
• at heart，mr．lin does not approve your proposal.
  林先生的心里并不赞同你的建议。
• mr．wang looks serious，but he is kind at heart.
  王先生看来严肃，但实质上他很仁慈。

• i know this poem by heart.
  我能背诵这首诗。
• i don't see the point of learning by heart all the dates in the history book!
  我真不明白为什么要把历史书里所有的日期都要记下来！

副词 by heart:

1. by committing to memory
   同义词：by memory

1. All you have to do is learn it by heart.
   你只要做的就是把它背出来。
2. Everyone in the class has to learn Lincoln's Gettysburg Address by heart.
   班上每个学生都必须默诵林肯葛底斯堡演说词。
3. It is important to learn large numbers of phrases by heart.
   背诵很多英文词组很重要。
4. We had better learn by heart as many sentence patterns as we can.
   我们最好尽可能多背句型。